Good question.
Easy, 1) write an exemption like they did for the cops or 2) just look the other way like they did for David Gregory. In the liberal mind laws are to control those on the outside. Insiders can do whatever they want...
Gun and violence are never used in movies what do mean? If they were maybe making a documentary about the3 Regan years in office the could add them in the studio later and have the actors hold umbrellas for props while filming.